TMR MIXERS Roto Grind Standard TMR Mixer Grinder Weight: 3,500 pounds Hitch Weight: 660 pounds Height: 8 feet 6 inches Tub Dimensions: 9 feet at the top of the tub by 7-1/2 feet at the bottom of the tub by 51 inches deep Tub Speed: 0 to 9 R.P.M. - depending on tractor hydraulic volume Tub Governor: To stop tub if the tractor R.P.M. pulls down. Standard equipment Six sets of hammers with 18 standard hammers and 6 hard surfaced lead hammers, 13 inches long with 11 inch swing Reversible, can be used on all four corners 1000 R.P.M. required (option) six special alfalfa hammers (38 lbs. each) to be run at 540 R.P.M. 5 adjustable shear plates to control the fineness of grind